[master] RFR: Exclude some tests from Lilliput which rely on array alignment

[Roman Kennke]

On x86_64, some IR tests are failing with +UCOH, because they expect a certain array alignment. Let's not run those tests with +UCOH, just like we do with other similar tests.

Testing:
 - [x] compiler/loopopts/superword/TestMulAddS2I.java

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Commit messages:
 - Exclude some tests from Lilliput which rely on array alignment

Changes: https://git.openjdk.org/lilliput/pull/173/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput&pr=173&range=00
  Stats: 15 lines in 1 file changed: 10 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/lilliput/pull/173.diff
  Fetch: git fetch https://git.openjdk.org/lilliput.git pull/173/head:pull/173

PR: https://git.openjdk.org/lilliput/pull/173